Surface-cleaning method

US6387189B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Andreas Groschl · Leverkusen, DE
• Torsten Groth · Reinbek, DE
• Volker Hassmann · Krefeld, DE
• Jürgen Horn · Uedem, DE
• Ingo Janisch · Gützkow, DE
• Winfried Joentgen · Neunburg vorm Wald, DE
• Bernhard Lehmann · Appenweier, DE
• Wolfgang Zarges · Neunburg vorm Wald, DE

Key dates

• Filing date: Mar 30, 1999
• Grant date: May 14, 2002
• Expiry date: Mar 30, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of cleaning surfaces made of glass, graphite, ceramics, polymeric and metallic materials, synthetic and vegetable fibres, e.g. fabrics, textiles or waste paper, in particular membrane surfaces, by detaching or dissolving organic and inorganic soilings by a simple flushing operation, where a solution of an iminocarboxylic acid, a polyamino acid, an emulsifier or a mixture thereof is used.